DSD Jr just started buzzing

Audio Components DACs
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The pre-owned DSD Jr I got about 18 months ago from TMR has started buzzing, loud enough to be easily heard at what most people would probably consider a reasonable volume setting at the preamp. Absolutely nothing about the system setup has changed since it last worked fine. I just walked into the room the other day and heard a sound like a cheap fluorescent lamp ballast coming from the speakers. As near as I can tell from the piano in the room, this is in between the Bb and B in the second full octave of keys, which means it’s probably 120Hz.

When I put the DAC in standby, the buzzing stopped. I left it like that for a couple of days and turned it back on, and the buzz resumed immediately. It gets louder and softer with the preamp’s volume control, but the DAC output level makes no difference - same buzzing volume whether output is 0, 100, or anywhere in between. Neither does it change if I select I2S (PSA SACD transport) or USB (Aurender streamer/server) inputs.

I’m sending a note to PSA’s service folks, but thought I’d ask here to see if anyone else has run into this issue and if so, what it turned out to be.

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Mine has done this before as well. Almost sounded like static and hash. A reboot from the back did the trick. Hasn’t happened in a long time. Standby would stop it because it mutes the outputs.

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I’ll give that a shot, James, Fingers crossed.

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That did it, James. Thanks so much. I’ve been in a funk ever since it happened. What a relief!

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Cool, good to know. You should be good. If it happens again, feel free to send the team a note.

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Sorry to say the buzz has returned, even louder than before. Delia in the service dept suggested not just powering it down, but also unplugging everything, from power to inputs/outputs, and letting it sit for a while. So that’s what’s happening now. Fingers crossed that will take care of it, though if this is a recurring thing, I have say that having to disconnect everything on a regular basis is no way to live with a hifi. :wink:

I’d sure hate to be back in the DAC market, especially in retirement.

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